JSON jobs in Columbia, MD

Software Engineer 3 - Linux/Java/Jax-RS/REST/JSON/XML/Maven/Eclipse/Gitlab

Annapolis, Maryland

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Today

Build to something to be proud of. Captivation has built a reputation on providing customers exactly what is needed in a timely manner. Our team of engineers take pride in what they develop and constantly innovate to provide the best solution. Captivation is looking for software developers who can get stuff done while making a difference in support of the mission to protect our country. Description Captivation Software is looking for a senior level software engineer who will be assisting with

Full-time

USD 130,000.00 - 270,000.00 per year

Software Engineer 3 - Linux/Bash/Python/Apache Airflow/SQL/Jupyter Notebook/NumPy/JSON

Annapolis, Maryland

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Today

Full-time

USD 130,000.00 - 270,000.00 per year

Software Engineer - Python/FASApi/JavaScript/JSON/CSS/MongoDB/Docker

Annapolis, Maryland

•

Today

Build to something to be proud of. Captivation has built a reputation on providing customers exactly what is needed in a timely manner. Our team of engineers take pride in what they develop and constantly innovate to provide the best solution. Captivation is looking for software developers who can get stuff done while making a difference in support of the mission to protect our country. Description Captivation Software is looking for a software engineer to provide customer support and infrast

Full-time

USD 130,000.00 - 270,000.00 per year

Jr.Java Developer

Hybrid in Greenbelt, Maryland

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2d ago

Position OverviewNote : Need Only USCNASA SEWP is seeking a mid-level Java Software Developer to build and maintain internal and external Java web-based applications. The successful candidate will become an integral part of our IT solutions team of developers, database and systems administrators in support the NASA SEWP Program Management Office, a multi-award government acquisition contract focused on commercial IT products and product based services.Core ResponsibilitiesDevelop and implement n

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Full-time

Depends on Experience

Application Engineer 4 (API)

Linthicum Heights, Maryland

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Today

Required: Python Docker Experienced using Django or Flask Databased experience using MongoDB or MariaDB ReST endpoint development Micro service model Desired: AWS or other cloud experience JSON and/or XML serialization Jira Confluence Git version control Agile

Full-time

Data Modeler

McLean, Virginia

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2d ago

Job Title: Data Modeler Location: McLean, VA On-site Duration: 6+ Months Job Description Core, hands-on experience in enterprise data modeling with data modeling serving as the candidate's primary responsibility and not simply exposure as part of a Data Engineering role.Recent hands-on experience with MongoDB, including designing or working with document-based data models.Strong mortgage domain experience with recent and consistent involvement in mortgage-related projects. Experience supporting

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Contract, Third Party

$50 - $60

Sr Data Modeler

McLean, Virginia

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5d ago

URGENT REQUIREMENT Sr. Data Modeler Location: McLean, VA Type: 12+ Contract (Onsite Position) Candidates who are already local to the McLean, VA area are strongly preferred. Responsibilities: Core, hands-on experience in enterprise data modeling with data modeling serving as the candidate's primary responsibility and not simply exposure as part of a Data Engineering role.Recent hands-on experience with MongoDB, including designing or working with document-based data models.Strong mortgage domai

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Third Party, Contract

Depends on Experience

Developer-Full Stack Specialist with Agentic AI

McLean, Virginia

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30+d ago

Job Title: Developer-Full Stack Specialist with Agentic AI Location: McLean, VA Must Have Qualifications: Must have 5+ years of experience and a strong AI development background. Must have hands on experience building agentic workflows, automating testing using AI, and working with tools such as GitHub, Copilot, and Claude. Required Technical Skills (must-have) GenAI / LLM + agentic development Hands-on experience building LLM-powered agents (tool-using, multi-step reasoning, guardrails). Experi

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Contract

Depends on Experience

Junior Software Engineer

Fort Meade, Maryland

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Today

Que Technology Group, Inc., is seeking a motivated Jr. Software Developer to support the exciting Geolocation and Data Integration. Developer will work closely with mission stakeholders to create innovative applications, analytics, and deploy solutions to customer supported tools to automate and enable data and metadata analysis. Mission Focus: Work in a variety of environments to develop analytics based on data from multiple cyber sources, as well as classic SIGINT via data tagging. Technical

Full-time

Sr Data Modeler

McLean, Virginia

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2d ago

Must-Have Skills 10+ years of enterprise Data Modeling experience (primary role)MongoDB document data modeling (recent hands-on)Mortgage domain experience (Freddie Mac/Fannie Mae preferred)Strong SQL and SnowflakeJSON and semi-structured data modelingETL, Data Integration, and Enterprise Data ArchitectureStrong stakeholder communication and leadership skills

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Contract

$60+

390 - Jr. Software Engineer

Fort Meade, Maryland

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Today

About ARSIEM Corporation At ARSIEM Corporation we are committed to fostering a proven and trusted partnership with our government clients. We provide support to multiple agencies across the United States Government. ARSIEM has an experienced workforce of qualified professionals committed to providing the best possible support. As demand increases, ARSIEM continues to provide reliable and cutting-edge technical solutions at the best value to our clients. That means a career packed with opportun

Full-time

USD 103,000.00 - 115,000.00 per year

Application Developer IV (API)

Jessup, Maryland

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Today

Job Description Description: SALARY RANGE $190,000 - $247,000/year. DUTIES As a successful candidate for the Application Engineer IV role, you will support the Secure the Enterprise initiative by developing capabilities that transition the current manual system security evaluation and authorization process to a modern framework emphasizing automation, streamlined processes and approvals, continuous monitoring and assessment, and network data gathering throughout the entire project lifecycle.

Full-time

USD 190,000.00 - 247,000.00 per year

Software Engineer Full Stack 2 - (Python, SQL, React)

Fort Meade, Maryland

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Today

Software Engineer 2 - (Python, SQL, React) Clearance: TS/SCI - Polygraph required Position ID: 20-6-003-SWE2 Location: Fort Meade, Maryland Description: Section 7 DAT is a forward deployed development team providing critical mission support to CNO. As a member of the team you will work closely with analysts and operators providing software solutions for hard CNE problems. You'll have the opportunity to work on every part of the CNE pipeline from sitting next to operators assisting them with t

Full-time

USD 191,000.00 - 234,000.00 per year

PHP Developer

Rockville, Maryland

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Today

Axiom Consultants, Inc, is seeking a skilled PHP Developer to provide support to the NOAA Fisheries Greater Atlantic Regional Fisheries Office (GARFO). Responsibilities: Develop, maintain, and enhance web-based applications using PHP 7 and modern frameworks such as CodeIgniter 4.Write, optimize, and troubleshoot SQL scripts and queries for Oracle and PostgreSQL databases.Collaborate with cross-functional teams to understand project requirements and implement user-friendly, secure, and scalable

Full-time

USD 95,000.00 - 105,000.00 per year

Software Engineer 3

Annapolis, Maryland

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Today

Seeking individual to provide software development support on a model repository. Developer will be required to have full-stack experience and desire to span front-end (JavaScript, React) to back-end (MongoDB). Other key technologies that are important for this position also include Java, Maven, Terraform, CVEs, Docker, AWS, JSON, Spring Boot, GitLab, Elasticsearch/opensearch, and Angular. Desired experience in Python and dataflows would also be appreciated.

Full-time

Senior Data Integration Engineer

Laurel, Maryland

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Today

Senior Data Integration Engineer Location: Annapolis Junction, MD Schedule: Full-Time, On-Site Clearance Required: TS/SCI with Polygraph SITEC Consulting is seeking a Senior Data Integration Engineer to support enterprise data modernization, integration, and automation efforts in a secure mission environment. This role will focus on ingesting, transforming, validating, and managing operational data that supports critical enterprise workflows and business applications. The ideal candidate will

Full-time

USD 150,000.00 - 200,000.00 per year

System Engineer 5

Annapolis, Maryland

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Today

Required Skills: Ability to form good relationships with customers and mission partners Reach out to external customers for requirements and understanding of the data and the data needs of the users Ability to critically think through complex data flow problems, break down effort into manageable tasks, and create/maintain scope out of sometimes vague customer requirements. Good working skills with Atlassian products such as Confluence and Jira Good understanding of data processing capabilities U

Full-time

Backend Application Engineer (Python) (Linthicum, MD)

Linthicum Heights, Maryland

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Today

**Active TS/SCI w/Polygraph REQUIRED** Please do not apply if you do not currently possess this level of clearance. Telework: None Basic Requirements: Bachelor's degree in a technical field. 8 years of applicable professional experience. Job Description: As part of the Secure the Enterprise initiative, develop capabilities to shift from the current manual system security evaluation and authorization process to a new model that emphasizes automation, streamlined processes and approvals, continuou

Full-time

USD 225,000.00 - 235,000.00 per year

Senior REACT JS Developer

Washington, District of Columbia

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12d ago

Role :OCTO - Senior REACT JS DeveloperLast date for submission: 08/16/2026Location:OCTO - 200 I Street, SE Washington DC 20003Exp : 15+Need local to DC, MD, VA onlyDescription:The role will require you to design, develop and test using React JS technologies which will facilitate application development and implementation from development to QA to production. You will work to gain an understanding of the current system infrastructure, security needs, network considerations, methodologies.In this

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Third Party, Contract

Depends on Experience

Java Developer Angular, W2 Role, Only Locals

Baltimore, Maryland

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5d ago

MUST have strong Angular along w/Java. Onsite Daily Baltimore (Woodlawn area) Will get public trust clearance prior to starting must have 3 years of U.S. residency; takes 2-3 weeks to cleR Video then onsite interview Long term contract Locals only Key Required Skills Strong experience with Java,Angular 9 andabove, Spring boot, Kafka and REST API. Position Description Design and develop software applications using Twelve-Factor App methodology from functional requirement Design and develop app

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Contract

Depends on Experience

JSON jobs in Columbia, MD, USA